Boyle toured America with Hendrix, who encouraged him to keep his working methods secret, quoting Louis Armstrong as a precedent; they were in a bar together when live news of Martin Luther King’s assassination provoked redneck jubilation. Bacon was both friend and fan, while Cardew provided sound for some early performances (with Brecht another collaborator). Kaprow appeared in a piece by Boyle, and Boyle in a piece by Kaprow. His closest collaborators — on a lifetime basis and beyond — were his wife Joan Hills, and their children, their projects now properly identified as by the Boyle Family.